Silver bullet Of Nw salmon recovery? I hope not to many other people feel that way. Nutrient suplementation is something that has great promise but not for all species. The research sugests that it can dramaticly improve the survival of juvinile Coho and Steelhead, and you could probably extend that to Spring Chinook. But Summer/Fall Chinook, Pink and Chum dont generally spend significant time in the rivers you would expect the impacts to minimal.